There is/was a corner of my basement that was pretty much rotting from within, complete with massive mold/mildew colonies. The drywall was ... it was not solid. The pink fluffy insulation was, in fact, black.

Firebombing it was appealing, but mostly it was taken apart with a sledgehammer and saws and miscellaneous other stuff. I wasn't around for much of it, as a) I am severely allergic to the basement even when it's not being actively dismantled, b) there were four breather masks and five people, and c) I was responsible for causing food.